LAS VEGAS — Colorado had seen Arizona’s defense at work before, in person and in the Pac-12 tournament quarterfinals.

Even knowing what was coming, the Buffaloes didn’t stand much of a chance.

Unable to match Arizona after a close first half, Colorado lost to the fourth-ranked Wildcats 63-43 in the Pac-12 semifinals on Friday night.

“We knew they were good defensively and we knew we were going to have to make some shots to beat them. We couldn’t get going,” Colorado coach Tad Boyle said. “Their defense had something to do with that. Our offense had something to do with that.”